Safety-razor.



J. A. MAKARHOF.

SAFETY RAZOR. APPLICATION FILED Ammo, 1911.

Patented Feb. 6, 1912.

.COLUMBIA PLANOGRAPH m -wgml ulflqrmq, I). c.

UNITED STATESPATENT OFFICE.

JOHN A. MAKARI-IOF,OF CHICAGO, ILLINOIS, ASSIG-NOR, BY DIRECT AND MESNEASSIGNMENTS, OF FORTY-NINE ONE-HUNDRED'II-IS TO F. R. BELT AND FIFTY-ONEONE-HUNDREDTI-IS TO GEORGE A. BAIRD, BOTH OF CHICAGO, ILLINOIS.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Feb. 6, 1912.

To all whom it may concern:

Be it known that I, JOHN A. MAKARHOF, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Safety-Razors, of whichthe following is a specification.

This invention relates to safety razors and aims to produce a device ofthis character which shall be simple in construction, cheap tomanufacture, which shall be strong and durable and which will hold theblade firmly in cutting position so that no vibration of the blade onits holder will take place when the device is being used. I

The following description when read in connection with the accompanyingdrawings illustrating one preferred form of my invention, will-besufficient for an understanding of the structure, the mode of operationand many of the desirable features thereof.

Referring to the drawings: Figure 1 is a sectional elevation taken onthe line 1-1 of Fig. 2; Fig. 2 is a plan view; and Fig. 3 is a rear viewof a razor embodying my invention; and Fig. 4. is a detail perspectiveview of the base member of the device.

On the drawings, 5 designates the base member which has a flat uppersurface, the forward end of the member being upturned to form the guard6 and being provided with a transversely extending slot 7 through whichthe cutting edge of the blade 8 dis posed on the fiat face of the basemember, projects. The bottom of the base member is preferably curvedupwardly near its forward end to permit the cutting edge of the blade tobe disposed at the proper angle and the rear edge of the member ispreferably cut away as indicated at 9 to enable the rear edge of theblade to be grasped by the fingers and removed from operative position.Suitable studs or lugs 10 project up wardly from the rear edge of themember behind the blade to prevent the blade from sliding backward onthe member and. the ends of the groove 7 are preferably inclined asindicated at 11 to cooperate with the similarly inclined forward cornersof the blade to' prevent the cutting edge thereof from projecting toofar through the slot.

The sides of the base member are provided with upstanding ears orprojections 12 perforated to receive a bearing pin or rod 13 upon whichis pivotally mounted a cam 14:. A handle 15, preferably constructedintegrally with the cam, provides a means whereby the cam may be turnedon its pivot to bring its face into engagement with the upper face ofthe blade to clamp the blade in position between the base member and thecam. It will be evident that when the handle is turned backwardly or tothe left, viewing Fig. 1, the cam will be released from engagement withthe blade to permit the blade to be lifted out over the lugs 10 andwithdrawn for the purposes of sharpening or cleaning the same.

In order that the blade may be tightly clamped and held adjacent itscutting edges to prevent the blade from vibrating on the base memberwhen the device is being used,

I have provided a locking shoulder 16 preferably integrally constructedwith the cam and with the handle and adapted when the cam is forced intolocking position, as shown in Fig. 1, to engage the blade adjacent itscutting edge and clamp the same firmly against the base member. By thisconstruction the blade is clamped and tightly held throughout its lengthby the cam 14: and is furthermore clamped and held against vibrationadjacent its cutting edge by the locking shoulder 16. When the handle ismoved into the position shown in Fig. 1, to lock the blade on the basemember, the razor is ready to be used, when it is desired to remove theblade or to insert a new one, the handle is simply turned backwardly torelease the cam and the locking shoulder from engagement with the bladewhereupon the blade can be readily removed and another inserted in itsstead.

It will here be explained that the base member 5 together with theupstanding ears 12 constitute a seat for the reception of the blade, theupper side of the seat being open so as to permit of the periphery ofthe cam 14 working through said open side of the seat into engagementwith the blade so as to press the latter against the back of the seat.

It is believed that the invention and many of its advantageous featureswill be understood from the foregoing without further description and itwill be obvious that various minor mechanical changes in the size,

shape, proportion and arrangement of the .or sacrificing any of thematerial advan tages thereof.

I claim:

1. A safety razor comprising a base member provided with a seat havingone side open, a rotatable cam mounted upon the base member between thefront and rear thereof and extending from side to side of the basemember with its axis disposed parallel to the cutting edge of the razorblade, the periphery of the cam working through the open side-of theseat in position to engage the blade and press the same against the backof the seat, and a handle for manipulating the device carried by thecam, substantially as described.

2. A safety razor comprising a base mem ber provided with a seat havingan open side, a guard extending across the front of the seat, ears uponthe body at opposite sides of the seat, a cylindrical clamping memberhaving its axis disposed in substantial parallelism with the guard andits ends eccentrically mounted in the ears, the periphery of theclamping member working through the open side of the seat in position topress a blade and holdrthe same against the back of the seat, and ahandle for manipulating the device carried by the clamping member,substantially as de scribed.

3. A safety razor comprising a base member provided with a seat havingone side open, a rotatable cam mounted upon 'the base member between thefront and rear thereof and extending from side to side of the basemember with its axis disposed parallel to the cutting edge of the razorblade, the periphery of the cam working through the open side of theseat in position to engage the blade and press the same against the backof the seat, a handle for manipulating the device carried by the cam,

and a brace member movable with the clamp- Copies of this patent may beobtained for the seat, ears upon the body at opposite sides of the seat,a cylindrical clamping member having its axis disposed in substantialparallelism with the guard and its ends eccentrically mounted in theears, the periphery of the clamping member working through the open sideof the seat in position to press a blade and hold the same against theback of the seat, a handle for manipulating the device carried by theclamping member, and a brace member movable with the clamping member anddisposed in position to lie against the blade between the clampingmember and the cutting edge of the blade to prevent vibration of saidcutting edge, substantially as described.

5. A safety razor comprising a base member provided with a seat havingan open Side, a guard extending across the front of the seat, arotatable cam mounted upon the base member between the front and rearthereof and extending from side to side of the base member with its axisdisposed substantially parallel with the guard, the periphery of the camworking through the open side of the seat in position to engage a bladeand press the same against the back of the seat, and a handle formanipulating the razor carried by the cam, said handle being disposed atan acute angle with respect to the forward portion of the base memberand extending in front of the guard in the clamped position of thehandle, substantially as described.

JOHN A. MAKARHOF.

Witnesses:

IRA J. WILSON, G. E. HOLMES.

five cents each, by addressing the Commissioner of Patents,

Washington, -D. C.

